Preparation of a metallic jointing compound



' .to producethe compound named, I first pregrates PREPARATION OF A METALLIC JOINTING COMPOUND.

No Drawing.

To all whom it may concern:

Be it known that I, HENRY BURRows, a subject of the King of Great Brita1n, residing at Poulton-le-Fylde, in the county of Lancaster, England, have invented a certa n new and useful Preparation of a Metalllc Jointing Compound, of which the following is a specification. t D

The invention is'for a metallic olnting compound, suitable for various kinds of joints, especially when subjected to heat, such as in the cases of steam plpe flange joints; cylinder head joints, pipe connections for gas or oil combustion-purposes, boiler seating and motor car radiator oints, and the like.

In carrying out the invention, and in order pare two solutions in the manner about to be described. For the first solution, and as an example, I may take 15 parts of gum shellac, 15 parts of pine resin, and 15 parts .of gum mastic, which I dissolve in 150 parts by weight of ordinary commercialmethylated spirit. After the solution is prepared, 1 may clarify it by any known means of filtration, to remove sediment.

For the second solution, I may take 15 parts of gum copal, 10 parts of-gum amine, 2 parts of Chinese wood oil, parts of Baltic linseed oil, and 50 parts of mineral naphtha. The second solution aforesaid is allowed to stand for a considerable period until'all grit,

- water or other undersirable material is deposited.

Equal parts of the solutions prepared are then mixed together. When the two solutions are completely blended, I introduce into the mixture very finely powdered metallic aluminium, such as is procurable on acommercial scale.

The metallic powder is then thoroughly incorporated until the mixture assumes a consistency, free from any clotted or lumpy portions. The time required for such incorporation will Specification of Letters Patent. Patented J]1ne,2'7, 1922. Application filed March 20, 1922. I Serial No. 545,358.

-vary according to the temperature of the mixing chamber, but such time will average about 15 minutes.

The compound as thus prepared is of a gelatinous or coloidal consistency, and when applied to a joint adheres closely, and is un-' affected in its efliciency by heat subsequently applied. The joint so treated can therefore be readily broken or the flanges or like parts pulled away from each other when desirable. The compound does not crack or otherwise become brittle during use, being thus able to withstand vibration.

The proportions of the various component of large size. Vith a small porportion ofpowdered aluminium, say 25 lbs. of the above quantity of solutions, the compound will be thin enough to be 'used as a paint, and in this form it is very effective when applied to steam boiler settings or similar brickwork.

I claim The preparation of a metallic jointing compound consisting in first dissolving gum shellac, gum mastic, and pine resin in methylated spirit, and separately mixing gum copal, gum amine, Chinese wood oil,

and linseed oil with mineral naphtha, combining said solutions, and mixing therewith finely powdered. metallic aluminium ,substantially as herein set forth.

In testimony whereof I hereunto aflix my signature. p

, HENRY BURROWS. 

